WinForm中窗体取消关闭的问题

         private   void  Form1_FormClosing( object  sender, FormClosingEventArgs e)
         {
            DialogResult dr = new DialogResult();
            dr = MessageBox.Show("关闭", "关闭", MessageBoxButtons.YesNo);
            if (dr == DialogResult.Yes)
            {
                MessageBox.Show("关闭");
            }
            else
            {
                MessageBox.Show("不关闭");
                e.Cancel = true;
            }
        }

转载于:https://www.cnblogs.com/mgod/archive/2007/06/14/783012.html